Fetal doppler echocardiography: Methods and characterization of normal and abnormal hemodynamics

Maulik, Debabrata; Nanda, Navin C.; Saini, Vasant D.

doi:10.1016/0002-9149(84)90033-x

Cited by 76 publications

(20 citation statements)

References 8 publications

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“…Several investigators were involved in pioneering research in this field. 18 The subject population consisted of 16 pregnant mothers with gestational age ranging from 28 to 36 weeks. Barber and colleagues from this team reported a duplex pulsed Doppler device, which combined two-dimensional echocardiography directed identification of specific targets and their interrogation with a pulsed Doppler beam.…”

Section: Duplex Pulsed Doppler Fetal Echocardiographymentioning

confidence: 99%

A brief history of fetal echocardiography and its impact on the management of congenital heart disease

et al. 2017

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Congenital heart disease (CHD), the most common congenital malformation, is associated with adverse outcome. Development of fetal echocardiography has made prenatal diagnosis of CHD a reality, and in the process revolutionized its management. This historical review briefly narrates this development over the decades focusing on the emergence of the primary modalities of fetal echocardiography comprised of the time-motion mode, two-dimensional B-mode, spectral Doppler, color Doppler, and three- and four-dimensional cardiac imaging. Collaboration between clinicians and engineers has been central to these advances. Also discussed are the accuracy and impact of fetal echocardiography on the management of CHD, and especially its role in the prenatal diagnosis of critical CHD in individualizing the management and improving the outcome. Despite these advances, most cases of CHD are not identified prenatally, emphasizing the continuing need for further technological and educational innovation and improvement.

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Section: Duplex Pulsed Doppler Fetal Echocardiographymentioning

confidence: 99%

A brief history of fetal echocardiography and its impact on the management of congenital heart disease

et al. 2017

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“…With pulsed Doppler ultrasound, identification and measurement of fetal intracardiac blood flow velocity waveforms have been performed [4,7,12]. The aortic and pulmonary MV was found to increase gradually with advancing gestational age, under physiologic conditions [6].…”

Section: Results and Commentmentioning

confidence: 99%

“…Recent advances in Doppler ultrasound have made feasible the assessment of in utero fetal cardiac circulatory hemodynamics [4,7,12]. Consequently, peak velocities of intracardiac and great vessel blood flow, stroke volume and cardiac output have been calculated [5,6,8,16,17].…”

Section: Introductionmentioning

confidence: 99%

Fetal cardiac time intervals determined by Doppler echocardiography

Hata

Senoh²,

Makihara³

et al. 1989

Jpme

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One-hundred and eleven Doppler echocardiographic examinations were performed on 88 normal fetuses, ranging from 16 to 41 weeks of gestation. Aortic and pulmonary maximal velocity (MV), acceleration time (AT), ejection time (ET), MV/AT (acceleration velocity: AV) and AT/ET ratio in systole were assessed on each blood flow velocity waveform. Aortic MV and pulmonary MV correlated well with gestational age, respectively. Good correlations between aortic AT, pulmonary AT and gestational age were evident. There were correlations between aortic AT/ET ratio, pulmonary AT/ET ratio and gestational age, respectively. However, there was no correlation between aortic AV, aortic ET, pulmonary AV, pulmonary ET and gestational age, respectively. These findings may relate to alterations in pulmonary and placental vascular resistance with advance in gestation.

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“…Doppler ultrasound techniques to assess fetal blood flows provide direct and dynamic information on the functional integrity of the fetoplacental unit [1], Doppler blood flow velocity signals obtained from the umbilical artery present a characteristic waveform and the rate of deceleration and end-diastolic velocity is thought to de pend mainly on placental resistance [2], Waveforms sug gestive of increased placental resistance were found to be related to intrauterine growth retardation and to mater nal hypertension and this has been correlated with pathological changes in the placenta [3,4], Examining the umbilical artery blood flow velocity waveform has a valuable potential as a noninvasive and serially predic tive indication of fetal well-being [5]. The fetus with a severely reduced umbilical diastolic velocity will have perinatal difficulties or will die [6].…”

Section: Introductionmentioning

confidence: 99%

“…The fetus with a severely reduced umbilical diastolic velocity will have perinatal difficulties or will die [6]. 1 We thank M. Ohara for comments.…”

Section: Introductionmentioning

confidence: 99%

Umbilical Artery Blood Flow Velocity Waveforms and Associations with Fetal Abnormality

Hata

Hata²,

Senoh³

et al. 1989

Gynecol Obstet Invest

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Blood flow velocity waveforms from the umbilical artery of 126 normal fetuses with no evident complications at 20–42 weeks of gestation and 15 fetuses with various abnormalities at 25–42 weeks were recorded using pulsed Doppler ultrasound. The resistance index (RI) was assessed on each blood flow velocity waveform. In 9 fetuses with a slight abnormality, the values of RI were within the mean ± 2 SD of normal fetuses, and the outcome was good. In 3 of 6 fetuses with a serious abnormality, the values of the RI were high, and 2 of these fetuses died in utero within a few days after the recording. Another fetus with a high RI and 3 with a normal RI died neonatally. Therefore, Doppler ultrasound assessments of the umbilical artery blood flow velocity waveform in utero aid in predicting the outcome for fetuses with major abnormalities.

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Fetal doppler echocardiography: Methods and characterization of normal and abnormal hemodynamics

Cited by 76 publications

References 8 publications

A brief history of fetal echocardiography and its impact on the management of congenital heart disease

A brief history of fetal echocardiography and its impact on the management of congenital heart disease

Fetal cardiac time intervals determined by Doppler echocardiography

Umbilical Artery Blood Flow Velocity Waveforms and Associations with Fetal Abnormality

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